class Button {
  //properties
  float x, y, w, h;
  int kind = 2;
  int r,g,b;
  //methods aka constructors
  bolean hit ( float xx, float yy ) {
    if ( kind == 1 ) { dist ( x, y, xx, yy )<~
    } else if ( kind == z ) { x x+w x y+h
    void show ( ) {
      fill (
      if ( kind == 1 ) { ellipse
      else ( kind == 2 ) { rect
      }
      
      //has
      x
      y
      w, h, r, or abc
      
      //does
      void show ( )
      void hit ( ----- )